Section insulator



` P. G. SWARS March 19, 1929.

SECTION INSULATO'R Filed Jan. 2, 1926 2 Sheets-Sheet AT'TORNEY March 19, 1929.

F.v G. swARs SECTION INSULATOR Filed Jan. 2. 1926 2 Sheets-Sheet WITNESSES:

INVENTOR Paz/Z 6. Swans. BY

ATTORNEY vPatented Mar. l1929.

f7 UNITED* STATES kiAfruEN'T orner-:.5

PAUL efsWARs, ,ortgPITTsBUaGm PENNSYLVANIA,V AssIGNoR To WEs'IINGHoUsE ELECTRIC a MANUFACTURING COMPANY, A CoRPoRA'TIoN ,oF PENNSYLVANIA.

isECTIoN-INsULATon.

c Ap'piicati'oa mea January '2, '192e seriai No.' 75,802. j

My invention relates 'to section insulators and particularly-to such section insulators as are employed in connection With trolley con-` ductors in overhead' line construction for electric railways.

One object 'of my invention is to provide a section insulator kin Which Worn'parts may be c ners l1- and two metallic bayonet approach easily and quickly replaced.

. Another object of my invention is to. provide a section insulator that maybe economi-Y cally manufactured and easily`and`-quicl ly installed in Working position.

`The section insulatorpcomprising'my 1nvention embodies a mainbody 'of vinsulating` material that is provided AWith eastingsat. each end and'li'as. its underrun parts so Jformedthat they may be easily and quickly removed and replaced. f

tion, reference may be had to the accompanying drawings, in-Which l Figure l is a view, in sidel elevation, of a section insulator embodying my invention.v

Fig. 2 is an enlarged View, in side elevation, of one end of the section insulator shoWnin Fig.l.

Fig. 8 is a plan view of the portion of the section ii'isulator shown in Fig, 2'.

Fig. l is a View in longitudinal section of 'one of the end 'castings oi'lthe section insulator, taken 3,and

Fig. 5 is a vieW inr vertical section of'one of the end .castings -talen along the line Vev et Fig-4t. i

Referring to the drawings, I

have shown 4section insulatorbhaving ab'odymember l of' afterexplained, I provide small cylindrical insulating materiahsueh as treated` Wood, which is provided with enlarged ends 2, to

which are attached metallic 'end castings 3..

The inner endsjll of the endfeastingsf are provided with recesses-that are adapted to receive theenlarged ends-2 of the bodymember l andform a clove-tailed lit therewith. rIlie dove-tailed parts are further secure/ditogether by .means of bolts 'tliat passthererthrough.V Y

, A suitable hanger 6 is attaeliedto theinsulator latits central portionas a means for fsupporting'the insulator inoperative position', and additional means for steadying and supporting it are furnishedl in theform 'of eyelets in the sides of the end Vcastings 3,110V which supporting Wires maybe secured. j

Fori a better understanding of inven-` f of thevv end 4castings 3,

The approach` members kl2l sliownjn the alongk the line IVQIV of I .26' yfor fastening vthe end Instead of rounding tlievunder vside and edges yof the body member land the end castings 3 to formV a smooth under-running surface for a trolley collector, I have provided' a separateunderruning'seetion comprising an insulating body runner 9, tWo stirrup eastings oriarcing tips l0, Vtwo metallicfend runmembers l2. They auxiliary insulating body runner 9 is held in position v against the main are, in turn, held against the body member.

l by. meansofstud bolts 13'.l p

Each metallic end runner 1l is.` preferably formed4 by casting it with a rounded yunder por'tionthat is'adapted to form asmootli surface for a trolley conductor, and vis provided with a` number of outwardly Vexteifiding 'lugs or lips 14 on its up'perside (see 5) `The lips 14 are adaptedto slidably fit on eo-operating-inwardly extending lugs l5 that are located on the under portions of dPauling are ofthe bayonet type such as is deyscribed in Patent No. 1,563,455, but any lother form of removable approach member may be u"usedyif desired. '-1 I While Vthebody member-l and the body runl yner 9 are forinedof insulating material, such the side Walls as Wood, the electrieal'separation of the eur- Vrent-cenduetifng' parts is lmade more effective Y `by means otair gaps that are located between thearcing tips 10 and the 'endruniers ll. In order to keep the air 'gaps opemgashereininsulating pins 17 that arelocated inthe gaps between the areing tips and the end runners.

Whatin the shape of rectangular box comprising tivo vertieal'side Walls 18 and l9and a series ofvertieal Webs or Walls v20, 21,- 22 and A23.' Th'eiside walls 18iand 19 land ythevvebs or Ivalls2O1and'22 form arecess or chamber in which may be located a! removable block. 24 for holding a trolley conductor 25.

ductor 25 land is also provided With set-screws ductor 25 therein.

Tof the trolley .leon-y ico The bloekf f is 'provided with a longitudinal opening `adapted to receive' the end of the' trolley .con-

lt thetrolley conductor 25 isifastened in the bloclr 24 after the block is placed in position` in the above-described recess in the eiid casting 3, any tension exerted upon it Will tend to Withdraw it from theend casting 3 and there by cause the liloclrQd, to which it is fastened,

to bear against the web 22V, and thusprevent further movement ot the trolley conductor lt should be noted particularly that.` the block 2l it'or securing the trolley conductor 25 tothe section insulator is adapted tobe freely removed iroinits .chamber or, lrecess inthe .end

castings 5 5 ivlienit is not fastened tothe trolley conductor 25. Y y

The sectionk insulator maybe, and preteil ably is, assembled at the .place Where it is manthat their lipsv le slidably engage the lugs uiactured by securing the endcastings 3 to the body member 1 by means ot the bolts 5. yljhe end. runners llfare next separately placed against ,the under sides ot' the Corresponding end castings 8 and areiiioved outvvardlyso on the end castings 3 to suoli degree that the end. runners 1l are securely locked in position against the under sides of the end castings, as

shown inllig. el. The insulating spacing pins fastened to the bodynieinber 1 by means of the studbolts `13. After the arcingjtips or stirrup castings 10are placed in position, the insulating blocks 17 in the. inner ends of the end runners will rest .against them and eiiectually l 11 l'rom sliding in prevent the end runners ivardly to permit the interlocking lips-lll to become disengaged from the interloclniiglugs 15.

1 Those assembled parts together With the rearcing; vtips .10 and movable blocks 24 and bayonet approach mombers lmaybe shipped to the pla-ce Where the section insulator is to be used.

ln placing the section insulator' in operative positiointhe assV inposition inthe overhead line construction 'and secured thereto by the hanger 6 and the eyes 7. The trolleyA conductors 25 are then threaded into the end castings 3 and their ends fastened inthe removable blocks 24, located inthe chambers in the end castings. The approach members 12 may next be-placed on the trolley conductor, driven into locking position in the section insulator and their lips clinched around the trolley conductor.

lf any one ot, the underrunning parts becomes ivorn, it may be easily and quickly replaced byromoving the stirrup castings Vor the. stud bolts 13, thereby releasing. thegbodyrunner. 9 and pe 'mitting` the end runners 11 to be moved toward the center of the insulator', so that their lips 14' inbled parts are lirst placed will become disengaged fronithe cov-operating lugs 15 on the undersideo'f theend castings 3 and release the end runners.

Various moditications and chances may b emadein the device illustrated herein asemk bodying` my invention Without departing from thespirit and scope thereof, and all such inodiiications and changes are intended to be covered by .theappended Claims.

l'claim as my invention: 1.- A sectrongiiisulatorfor trolley conductors comprising an insulatingbody member7 a body runner, arcingV tips ,for ,the .body Yrun-` ner aiidnieans for fasteningthe arcingtips to the body member, end members provided with recesses, ,removable means vforfliolding` the trolley conductors and adapted to be held in said recesses, removable end runners pro,-y

vided with interlocking' means tosecure. them to the endinembers, and insulatiiigbloclrs located between .the aiming,` tips and` the end runners. i

2. A section insulatoror trolley conductors comprising an insulating body member, a Vbody ruimer secured to the body member, end members provided With recesses, removable means. for holding thetrolley conductors Y and adapted tobe held said recesses, and removable endv runners provided .with interlocking means to vsecure themtto the endmeme bers. l Y

3. Asection insulator tor trolley.,condiictors comprising an insulatingbody member, end members therefor, runners removablyfattached to the body'meinber'and the end meinf bers, and insulating blocks adapted tosepa rate the runners `iirointhe, correspondingend members. 1 i g Y fl. section iii'sulatorfor gtrolley conductors, comprising an insulating` body member, a body runner, arcing tips for the runner and stud bolts adapted to removably 'fasten ,the

arcing tips rto the body member, end members attached to the body member, and yendrunners aligned with the body ruimer andro movably fastened to the end members.

5. A section insulator for tors compr1 runner severally provided With lugs, saidlugs beine' sodisoosed that the lues ontheend ,i l t.

runner are above the lugs on the end member for vertically supporting` the end runneryin position ivhen the lugs-are slidablyv'engaged. (LA section insulator 'l'or trolley conductors, comprising;` aiiiiisulatinggbo-dy member,

anond member therefor provided with a chamber, arunner removably attached to the end member, and. separate -iiieans` .located in the .chamber for liolding.a` trolley conductor.

7. l section insulatorI for .trolleyconduc tors coniprising` an insulating y body( member trolley conduc- Y isingan end member and an end'v lio iso

and an endmember therefor provided. with a Y chamber. a ruimer.removablyY attached-to the end member, and a trelley-conductorholding means loosely mounted in the chamber.

S. A section insulator for trolley oonduo'- tors comprising an end member traversed by tors comprising' an insulatingbody member, it a Wall, and means for holding a trolley conrunner fastened thereto, an end `member productor Comprising a block and means for fasv vided with a chamber, and a trolley-conduc- VLening the block to the conductor, said block l tor-holding means comprising a block, and being `disposed'ztt one side-of said Wall 'and means forseeuring the block to the condueadapted to bear against it when the conductor tor, said block being` disposed on the condneis. iindertension. v f 1 l tor in position Eto be held against vone Wall of VIn testimony whereof, I have hereunto subsaid Chzunber by the tensionV of the eonducsoribed'my namevthis 29th day of December, 20A l l0 tor. A l v 9. Asection insulator for vtrolley -condue-V l PAUL G. SWARS. 

